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AI# 10900
Regular City Council Meeting
6.7.
08/09/2022:
Information
Agenda Item
Resolution - Engineering:
Consider a resolution authorizing the Mayor to execute Change Order No. 3 to Contract 15477, with Garney Construction, for construction of the Low Head C Supply Line.
Item Summary
The purpose of this project is to construct a supply line to transport treated water from the South Water Treatment Plant to existing Pump Station 16. The Low Head C Supply Line will connect the Low Head C Pump Station to the existing Bailey County Well Field Supply Pipeline and to existing Pump Station 16. This project is part of the Strategic Water Supply Plan adopted by the City Council on February 28, 2013.
Change Order No.1 to Contract 15477 included Proposed Contract Modification (PCM) 001 through 003 as well as Work Change Directive (WCD) 001. These changes included adjusting the pipe alignment in order to provide installation savings to the City, replacing a 24-inch waterline near abandoned Pump Station 7 that will ensure the new Low Head C Pipeline will be able to fully function as designed, and adding traffic-rated valve vaults along 26th Street in order to protect the new Low Head C infrastructure now and in the future.
Change Order No. 2 to Contract 15477 was a time-only extension of 99 days, due to project delays outside the contractor’s control, including unfavorable weather conditions and an unrelated line break in the City of Lubbock distribution system, which delayed the critical shutdown of Pump Station 16 that was necessary to complete the work authorized by Change Order No. 1.
Change Order No. 3 to Contract 15477 includes a reconciliation of all contract overruns and underruns, improvements to drainage along the pipeline path, pipe repairs at the old Pump Station 7 site, and a time extension of 168 days due to delays to the Low Head C Pump Station Project. The Low Head C Supply Line cannot be disinfected and put into service until the Low Head C Pump Station is complete.
Fiscal Impact
Change Order No. 3 results in a credit of $195,919 to Capital Improvement Project 92450, Low Head C Supply Line and Pump Station.
Staff/Board Recommending
Erik Rejino, Assistant City Manager
Attachments
Resolution
Change Order No.3
Original Contract
Change Order No.1
Change Order No.2
Location Exhibit
Budget Detail
CIP Detail
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